名詞 narcotic:

1. a drug that produces numbness or stupor; often taken for pleasure or to reduce pain; extensive use can lead to addiction

形容詞 narcotic:

1. of or relating to or designating narcotics
2. inducing stupor or narcosis
   同義詞：narcotizing, narcotising
3. inducing mental lethargy
   同義詞：soporiferous, soporific

1. Stupor induced by a narcotic.
   麻醉性昏睡麻醉藥引起的昏迷狀態(tài)
2. I felt comfortable on narcotic effect.
   在麻醉劑的作用下我感到舒服些。
3. Narcotics are a major threat to health.
   毒品是危害健康的大敵。

nar.cot.ic

n.（名詞）
An addictive drug, such as opium, that reduces pain, alters mood and behavior, and usually induces sleep or stupor. Natural and synthetic narcotics are used in medicine to control pain.
麻醉劑：一種能使人上癮的藥劑，如鴉片，能夠減輕疼痛，改變心情和行為，通常導致沉睡或麻木。天然和合成的麻醉劑用于醫(yī)藥止痛
A soothing, numbing agent or thing:
起鎮(zhèn)靜、緩解或麻痹作用的東西：
例句：
.There was the blessed narcotic of bridge, at the Colony or at the home of friends.(Louis Auchincloss)
.在僑民或是在朋友們的家中，都用橋牌來醉生夢死一番.(路易斯·奧金克洛斯)

adj.（形容詞）
Inducing sleep or stupor; causing narcosis.
麻醉性的，催眠的；引起麻醉的
Of or relating to narcotics, their effects, or their use.
麻醉品：麻醉劑的，由麻醉劑引起的或它們的使用的
Of, relating to, or intended for one addicted to a narcotic.
上癮的：麻醉劑成癮者的，與其有關(guān)的或傾向于其的

來源：
Middle English narcotik
中古英語 narcotik
from Old French narcotique
源自 古法語 narcotique
from Medieval Latin narcôticum
源自 中世紀拉丁語 narcôticum
from Greek narkôtikon [neuter of] narkôtikos [numbing]
源自 希臘語 narkôtikon [] narkôtikos的中性 [麻木的]
from narkôsis [a numbing] * see narcosis
源自 narkôsis [麻木的] *參見 narcosis

【引伸】
narcot.ically
adv.（副詞）